Fe3O4@SiO2@Pr-Oxime-(BuSO3H)3 synthesis and its application as magnetic nanocatalyst in the synthesis of heterocyclic [3.3.3] propellanes

The modification of Fe3O4 nanomagnetic particles with inorganic and organic compounds was accomplished. The Fe3O4@ SiO2@Pr-Oxime-(BuSO3H)(3) as Bronsted acid was synthesized by functionalization of Fe3O4 in several steps and characterized by various techniques. Domino reaction of dimedone, anilines, ninhydrin, and malononitrile was investigated by a magnetic catalyst without using solvent at 80 degrees C. This method has many advantages including short reaction time, green conditions, ecofriendly, excellent yields of products, and easy separation by an external magnet. [GRAPHICS] .

Automated summary

The modification of Fe3O4 nanomagnetic particles and the synthesis of Fe3O4@ SiO2@Pr-Oxime-(BuSO3H)(3) as a magnetic catalyst were successfully achieved. The magnetic catalyst was employed in the domino reaction without solvent, exhibiting advantages such as short reaction time, eco-friendly nature, and easy separation.